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Jenny has $10. She earns $7, spends $18, earns $4, then spends $8. How many dollars does she have or owe? *

Question

Jenny has 10.Sheearns10. She earns 7, spends 18,earns18, earns 4, then spends $8. How many dollars does she have or owe? *

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Solution

Jenny starts with $10.

After earning 7,shehas7, she has 10 + 7=7 = 17.

After spending 18,shehas18, she has 17 - 18=18 = -1. This means she owes $1.

After earning 4,shehas4, she has -1 + 4=4 = 3.

After spending 8,shehas8, she has 3 - 8=8 = -5.

So, Jenny owes $5.

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